Valve construction



Jal 7,- 1925.

F. A. SCHWA'B VALVE CONSTRUCTION Original Filed' April 1920 Patented July 7, 1925.

YITREID CFW B O B TTE Y QN' N VALVE consrnuo'rio v;

Original applicatibnfi1eii Apri128 1920, Serial 'N 'o 377,254; Divided and this application filed December: 1 8, 1922 "Seria1No. 605,737. 1

To all whom it may concern:

citizen of the United. States, residing at Butte, in the county of Silverbow and State" of Montana, have invented certain new and useful Improvements n Valve Construction, of which the following is a spec1fica tion.-=- 5 This case is a division oflapplicantsprioi" easel-No. 377,254, filed April28th, 1 920 "suitable mixing element -Thatis to say, it

is an aim to provide a valveo'fga novel form by which feedoi fuelto two. separate car: buretor bowls may. be alternatively con:

trolled, and whereby fuel fromtheseboivls may also be supplied to a COHIHIODOOllClUlt or out oii'therefroi'n, Itis also an aim. of

he invention'to construct suchfaxdevice' whic'hyin addition to-the functions beifore named, Will also serve as a complete cut-off of two fuel supplies .tojthe carburetor, and

ofthe'outlet'fro n the carburetor. .It is an additional object' to attain the ends-named V by fnieans of a single valve element of coin pa'ratively simpleform;,whicli' may be opera v lated ion the different functions by one control lever. i

and shown in the drawings; wherein,

Figure 1- isa: longitudinal sectional view of the valveand its I housing,- in acne possible embodiment,

" Fig.1 2 is side view of z'tlie-ivalveiplug alone,-:

ld igi.v Er-is af'top view? ofaTcorburetor' doubleibowl element, and valve housing lIl-"l I 7' rectilinear form extendlng diametrically y volved inthe .invention,;- a

'97 Fig. 4 is across section at one ofthe fuel supply connections onthe bow 1,

Fig. 5 is a similar view-centrally There isvillustrated albase elementf'l0aoi. 1

a carburetor having two reservoir bowls' l-l therein, adaptedvto contain twodifferent fuels supplied thereto through; respective 1 fuel connections 12 at-"one'fside of the bowl. Between the connections 12 and the bowls 11, the body of the bowl is .enlargedas at13, so as to enable the formation-rota horizontal wells 11.

valves when the floats become lowered,-'and" and the connections 12. Opening from each connection 12'to thebore-l, there are con du'itfpassages 15, and alined withthese 'at" tli'e'o-pposite side of the bore, there are 0011-. tinu'ation passages 16 which extend into, float-mounting lugs 17, stopping shortof' the bowls 11 and being adapted to be drilled simultaneously with the passages 15, through through the lug there are valve guidepasthe connections 12. Extending downwardly sages 18,"in which valves 19 are-slidable, ar l ranged to close the fuel feed at the lowerpart, after any suitable manner; Immediately above the point of closure, passages open from the valve passage 18]"into thei" 7 Any usual float construction'21 may be utilized, connected with t the" valves 19 in a sultable way to'e'fiect opening ofthe p I A conical borellextending past'the bowls 11- it .Be 1t known that L- Fnnn A. SoHwAB, a

closure "of the valve when'thef'floats are raised. In addition to he passages 16 and' 20 opening'frointhe we ls '11 to'thebor'e 14,

passages 22 also open from thewells" into the bore '14, the last named passa'ges'fbeing' formed inwardly of the passages 16. -'lllle f passages 22 are spaced equally'froin themid' length of the bore and medially of the bore;

there is formed avertical passage 23 open I ing from the bore throughthe top; face 24? of the enlargement 13 before mentioned] Any usual connections or, conduits maybe associated withthe passage 23 to conduct fuel therefrom to a mixing chamber of the carburetor, or other: devices'as may-'beinvolved' --in the carburetor or charge forming means,

onemeans being formallyillustrated' at"25' snugly in" the bore 14, there is "a plug valve' and'alined with 'thepassages 16 being ef fthrough the plug, these'passages being. in *respective longitudinal planes at right-am ,in Fig; l,the details of which; form no sential part of the presehtinVehtiOn. Fitted '11 a, v y 26 havingpassages27 formed-infrespective? \planes at rightangles to-thfe axis of the plug gles to each other,+-that is to say, the' ori f Y fices of the-two passages are'spaced circ'um ferentially of the plug QO 'degreesJ wardly of these passages and circumscribing the-plugin'a'plane at right angles 'to -its axis, there are annular grooves"28, 'fal1nedf*- with the -,passages 22. From each; roove, 7

there extends-' longitudina1ly inwar upon the/plug a 'channel 30, stopping short of the ,mg means. I 7

position openfor supply of fuel 'to one well," and passage of fuel therefrom to the charge other groove, the channel 30 from each] groove being spaced circumferentially of the plug 90 degrees from the adjacent diametrical passagefl'l'. iVith this relation of the parts, when one passage 27 is in position alined with the passages 15 and 16 ofthe valve cage, the respective channel 20 from thejnextadjacent groove 28 may be located at the upper side of the plug, and in ce ninu nication with the outlet passage 23, whereby not only is fuel admitted to the wells ll, but may pass from the wells by way of thi passage 22, groove 28. channels 30 and pas sage 23, to the charge forming means proper. lVith the port elements spaced as indicated, a one-eighth turnof the valve from open position with respect to either well 11 will efiect cut-off ofboth fuel feeds, and both conduits from .the wells to'the charge form- Assuming :thevalve' to be in forming meansat the passage 23, a quarter turn of the valve in the proper direction ,willclose/ off both fuelsupply and charge supply from: one well, and establisl-i operativeconditions with the other. Y v

ln arburetors and'the like, this has the advantage that after cut-off of fuel supply to one well, the contents of that well will not be exhausted when fuel is being used from the other well, and at any time that it may be necessary to suddenly change from one fuel: to another, there will always be fuel ready for instant use in the respectivewell, Without requiring time for; the Well tobe filled to a proper level before proper feed of fueltherefrom will be'effected. Economy of fuel is thus effected in operation of engines lin which two fuels are involved, and liabil-,-

ity. of leakage is also minimized. The plug valve 26 may be secured in the bore 14 in any customary way, andmay be operatedinany suitable manner. In the present in stance, a Washer 31 having a rectangular opening is fitted upon arcctangular tenon 32 at the small end ofthe plug, the washer being of a size to abut snugly against the ad-- jacent face-of the bowl casting, the plug @beingdraWn snuglyaifntothezpassage. 1l-by V 7 U means of; aqIJ lfl 33engage'd upon the; threaded portion 34: of the plug: The-large end of the plug is alsotenoned and may beiitztedwith aleveras; at 85;; in Fig. 1=;- I It isa'n advantage of the annularchannels 28 that they will serve to collect sediment or water, which maybe removed without taking, down the carburetor, by vsimply loosening:theplug-valve'26s The' device isada'ptedrto be constructed economlcally, andserves the double; function elficiently. What is claimed is :1

15,111 a device of thecha'racter described, a czplu raliity offuel-bowls and respective liquid level controls, a plurality of liquid fuel sources, and a charge'formingdevice, a valve case, conduits from the bowls to the valve 7 case, a conduit from each fuel source to the valve case, and a conduit from the valve case ,toi the charge forming device; and a single valve member operative in the case constructed and operable to form .connnuni ication between any of the fuel sources and respective bowls alternately and between passage, two main supply conduits opening through the case into said passage and having extensions opening from the passage at a distance from the" said conduits, passages being formed in the plug positioned to con 'ne ct respective conduits andtheir extensions alternately and being arranged to' be both positioned out :of connecting relaiti-o'n whereby positive cut-off of two supplies may be effected, separate. bowl outlet conduits entering the said seat passage points space'd' longitudinally from the main conduits andspaced longitudinally from each other, and an outlet conduit opening frointhe seat passagebetweenthecond'uits last named,

said plug having passages" formed therein separate from those therein first named, e -acl i" adapted to form communication between outlet only when the'ad-iacent '1nai1 supply conduit and respective first 'nained'passage in the plug-are in connecting relation, saidextensionshaving communication with re--' 7 :one of the second named conduits a-nd the" 'spective reservoirs at one" side ofthe' plug; a

and respective pfiuid level-actuated means associated therewith to control flow of fuel to the reservoirs.

3. In'airinteinal combustion engine the combination with two liquicl fu'elfioat cham' Jbers each havin'ga fuel inlet duct, an outlet duct to the engine and a float and a valve controlled by the float' 'to control the inlet idu ct, of a single valve memberfor posi tively closing .botlrth'e inlet duct and the outlet duct of each chamber substantially simul taneously and the ducts of theitwo chambers alternately. I

In testimony whereof I- have aflixe'd'my signature: in presence" of two witnesses.

Witnesses hRoBERT; $Mrrrr,

FRED. A. SCHWAB'. I

Certificate of Correction.

It is hereby certified that Letters Patent No. 1,545,284, granted July "7, 1925, upon the application of Fred A. Schwab, of Butte, Montana, for an improvement in Valve Construction, were erroneously issued to the inventor, said Schwab, Whereas said Letters Patent should have been issued to the inventor said Sohwab, and Robert Smith, of Butte, Montana, said Smith being assignee of one-half interest in said invention, as shown by the records of assignments in this office; in View of the affidavit in the file, the inventors name should read Fredrick instead of Fred; and that the said Letters Patent should be read With these corrections therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 18th day of August, A. D. 1925.

[SEAL.] KARL FENNING,

Acting Commissioner of Patents. 

